What's the Kennection? #287

Telephone operator Mary Doyle posed for Normal Rockwell's famous portrait of what World War II-era "Riveter"?

The "best boy" is the assistant to what crew member, the head electrician on a movie set?

What's the name of the disapproving eagle on The Muppet Show?

In the title of the Christmas carol "God Rest You Merry Gentlemen," the comma should come after which word?

Ben Vereen won a Tony for playing the son of Charlemagne in what 1970s Broadway hit?

What's the "Kennection"?